User guide

Evaluation Kit Hardware
4-54 Evaluation Kit (EK) User Guide
11115A–ATARM–27-Jul-11
4.3.5.7 RS232 Connector with RTS/CTS Handshake Support
Figure 4-41. USART Connector J12, J13
Table 4-26. USART Connector J12 Signal Descriptions
Pin Mnemonic Description
1, 4, 6, 9 NO CONNECTION
2 RXD (RECEIVED DATA) PA1 RS232 serial data output signal
3 TXD (TRANSMITTED Data) PA0 RS232 serial data input signal
5 GND Common ground
7 RTS (REQUEST TO SEND) PA2 Active-positive RS232 input signal
8 CTS (CLEAR TO SEND) PA3 Active-positive RS232 output signal
Mechanical pins Shield
Table 4-27. USART Connector J13 Signal Descriptions
Pin Mnemonic Description
1, 4, 6, 9 NO CONNECTION
2 RXD (RECEIVED DATA) PC23 RS232 serial data output signal
3 TXD (TRANSMITTED Data) PC22 RS232 serial data input signal
5 GND Common ground
7 RTS (REQUEST TO SEND) PC24 Active-positive RS232 input signal
8 CTS (CLEAR TO SEND) PC25 Active-positive RS232 output signal
Mechanical pins Shield